STUDIES ON THE HUMUS FORMS OF FOREST SOILS : IV. Humus Composition of Fractionated Horizons of Forest Soils

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概要

• 論文の詳細を見る

• The results of humus composition analysis of eash fraction separated physically from each horizon of the five forest soils used in the last paper (3) were presented. Regular changes in humus composition were observed with the gradation of horizons and with the decrease in particle size. Most of the humic acids from plant residual fractions belonged to the Rp type; humic acids from the L layers showed a tannin-like character which disappeared with the progress of decomposition, and humic acids from the smaller particle fractions of the H layers contained a Pg fraction. As for humic acids from the A horizon, they all belonged to the P or B type and contained a Pg fraction. In addition, it was concluded that the humification process in the mineral layer was clearly different from that in the organic layer.

• 社団法人日本土壌肥料学会の論文

著者

• Ohta Seiichi

  Faculty Of Agriculture Nagoya University

• KUMADA Kyoichi

  Faculty of Agriculture, Nagoya University

• Kumada Kyoichi

  Faculty Of Agriculture And Water Research Institute Nagoya University

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